(a) The board of land and natural resources shall adopt rules pursuant to chapter 91 prescribing procedures for determining a shoreline and appeals of shoreline determinations that are consistent with subsection (b); provided that no determination of a shoreline shall be valid for a period longer than twelve months, except where the shoreline is fixed by artificial structures that have been approved by appropriate government agencies and for which engineering drawings exist to locate the interface between the shoreline and the structure.
(b) The chairperson of the board of land and natural resources shall cause a public notice to be published in the periodic bulletin published by the office of planning and sustainable development. All comments to the application for shoreline certification shall be submitted in writing to the state land surveyor no later than fifteen calendar days from the date of the public notice of the application. Notice of application for certification shall be identified by tax map key number, and where applicable, street address and nearest town.